https://blog.wongcw.com/2018/12/14/%e4%b8%ad%e4%b8%96%e7%b4%80%e6%b2%b9%e7%95%ab%e8%a4%aa%e8%89%b2%e7%9a%84%e5%8e%9f%e5%9b%a0%e7%ab%9f%e6%98%af%e5%be%ae%e7%94%9f%e7%89%a9%e6%8a%8a%e9%a1%8f%e6%96%99%e7%95%b6%e9%a3%9f%e7%89%a9%ef%bc%9f/
中世紀油畫褪色的原因竟是微生物把顏料當食物?